47 import java.util.Map;
  48 import java.util.Set;
  49 import java.util.function.Supplier;
  50 
  51 import jdk.internal.misc.JavaLangModuleAccess;
  52 import jdk.internal.misc.SharedSecrets;
  53 
  54 import static jdk.internal.module.ClassFileConstants.*;
  55 
  56 
  57 /**
  58  * Read module information from a {@code module-info} class file.
  59  *
  60  * @implNote The rationale for the hand-coded reader is startup performance
  61  * and fine control over the throwing of InvalidModuleDescriptorException.
  62  */
  63 
  64 public final class ModuleInfo {
  65 
  66     private final int JAVA_MIN_SUPPORTED_VERSION = 53;
  67     private final int JAVA_MAX_SUPPORTED_VERSION = 55;
  68 
  69     private static final JavaLangModuleAccess JLMA
  70         = SharedSecrets.getJavaLangModuleAccess();
  71 
  72     // supplies the set of packages when ModulePackages attribute not present
  73     private final Supplier<Set<String>> packageFinder;
  74 
  75     // indicates if the ModuleHashes attribute should be parsed
  76     private final boolean parseHashes;
  77 
  78     private ModuleInfo(Supplier<Set<String>> pf, boolean ph) {
  79         packageFinder = pf;
  80         parseHashes = ph;
  81     }
  82 
  83     private ModuleInfo(Supplier<Set<String>> pf) {
  84         this(pf, true);
  85     }
  86 
  87     /**

  47 import java.util.Map;
  48 import java.util.Set;
  49 import java.util.function.Supplier;
  50 
  51 import jdk.internal.misc.JavaLangModuleAccess;
  52 import jdk.internal.misc.SharedSecrets;
  53 
  54 import static jdk.internal.module.ClassFileConstants.*;
  55 
  56 
  57 /**
  58  * Read module information from a {@code module-info} class file.
  59  *
  60  * @implNote The rationale for the hand-coded reader is startup performance
  61  * and fine control over the throwing of InvalidModuleDescriptorException.
  62  */
  63 
  64 public final class ModuleInfo {
  65 
  66     private final int JAVA_MIN_SUPPORTED_VERSION = 53;
  67     private final int JAVA_MAX_SUPPORTED_VERSION = 56;
  68 
  69     private static final JavaLangModuleAccess JLMA
  70         = SharedSecrets.getJavaLangModuleAccess();
  71 
  72     // supplies the set of packages when ModulePackages attribute not present
  73     private final Supplier<Set<String>> packageFinder;
  74 
  75     // indicates if the ModuleHashes attribute should be parsed
  76     private final boolean parseHashes;
  77 
  78     private ModuleInfo(Supplier<Set<String>> pf, boolean ph) {
  79         packageFinder = pf;
  80         parseHashes = ph;
  81     }
  82 
  83     private ModuleInfo(Supplier<Set<String>> pf) {
  84         this(pf, true);
  85     }
  86 
  87     /**